Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Gear Strength Evaluation of Electric Axle for Construction Machinery using Simulation Model

Simulation Model을 이용한 건설기계용 전동식 액슬의 기어 강도 평가

  • Han, Hyun-Woo (Department of Biosystems Engineering, Seoul National University) ;
  • Park, Young-Jun (Department of Biosystems Engineering, Seoul National University) ;
  • Lee, Ki-Hun (Technical Laboratory, Seil Industrial Co., Ltd.) ;
  • Oh, Joo-Young (Advanced Mechatronics R&D Group, Korea Institute of Industrial Technology) ;
  • Kim, Jeong-Gil (Smart Agricultural Machinery R&D Group, Korea Institute of Industrial Technology)
  • 한현우 (서울대학교 바이오시스템공학과) ;
  • 박영준 (서울대학교 바이오시스템공학과) ;
  • 이기훈 (세일공업 (주) 기술연구소) ;
  • 오주영 (한국생산기술연구원 첨단메카트로닉스연구그룹) ;
  • 김정길 (한국생산기술연구원 지능형농기계연구그룹)
  • Received : 2021.08.25
  • Accepted : 2021.09.23
  • Published : 2021.12.31
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Abstract

As environmental issues have emerged worldwide, emission gas regulations have been strengthened. In the construction machinery sector, studies have been actively conducted to utilize the power source of electric motors owing to the increasing demand for zero emissions. In this study, the gear specifications of an electric axle for construction machinery were selected by considering the specifications of the motor, gear tooth contact pattern, and face load factor. The gear strength evaluation was performed at the system level using the simulation model. The bending and contact strength of the spiral bevel gears and the bending strength of the planetary gear set showed a safety factor of 1 or more. However, the contact strength of the planetary gear set showed a safety factor of 0.92. Conservative results were derived by performing the analysis under the rated load condition of the motor. However, the ratio of the equivalent torque to the rated torque of the motor was 45% or less, hence, it was determined that no difficulties should arise regarding the durability of the axle.

Keywords

Acknowledgement

본 논문은 산업통상자원부의 재원으로 한국산업기술평가관리원의 기계산업핵심기술개발사업-제조기반생산시스템기술개발사업(과제번호 : 20004583) 및 국토교통부/국토교통과학기술진흥원이 시행하고 한국도로공사가 총괄하는 "스마트건설기술개발 국가 R&D 사업(과제번호 : 21SMIP-A 158708-02)"의 지원을 받아 연구되었으며, SMT사의 MASTA 소프트웨어를 사용하여 수행되었습니다.

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